Evaluations of Existing Onsite Sewage Systems — EES Why do I have to do an EES?
In 1995 the State Department of Health revised the onsite sewage code. In this revision a section was added requiring that all onsite sewage systems must be monitored periodically. Jefferson County revised our local code to address this requirement, resulting in enrollment into the monitoring program being required at various times in the life of a system. One of those times is at the time of sale.
